Headquarters Daily Report

                         AUGUST 12, 1998

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                    REPORT             NEGATIVE            NO INPUT
                    ATTACHED           INPUT RECEIVED      RECEIVED

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PRIORITY ATTENTION REQUIRED  MORNING REPORT - HEADQUARTERS AUGUST 12, 1998

MR Number: H-98-0122

                           NRR DAILY REPORT ITEM
                           GENERIC COMMUNICATIONS



Information Notice 98-30, "EFFECT OF YEAR 2000 COMPUTER PROBLEM ON NRC   
LICENSEES AND CERTIFICATE HOLDERS," will be issued on August 12, 1998.   
                                                                         
This notice is being issued to all material and fuel cycle licensees and 
certificate holders to remind them of the potential problems their       
computer systems and software may encounter as a result of the change to 
the year 2000.  Addressees are encouraged to establish year 2000         
readiness programs.                                                      
                                                                         
Contact:  Gary Purdy, NMSS                                               
          301-415-7897                                                   
          E-mail: gwp1@nrc.gov                                           
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REGION I  MORNING REPORT     PAGE  2          AUGUST 12, 1998

Licensee/Facility:                     Notification:

Duquesne Light Co.                     MR Number: 1-98-0041
Beaver Valley 1                        Date: 08/12/98
Shippingport,Pennsylvania              SRI/PC                             
Dockets: 50-334
PWR/W-3-LP                            

Subject: UNIT RESTART AND REACTOR TRIP FOLLOWING EXTENDED FORCE OUTAGE   
Reportable Event Number: 34629                         

Discussion:

On August 11, at 1:13 pm, the Unit 1 reactor was synchronized to the grid
following completion of a 192 day forced outage.  During the outage the  
licensee corrected various Technical Specifications surveillance test    
program weaknesses and design deficiencies.  At 3:12 pm, the reactor     
tripped from 24 percent reactor power, due to an "A" steam generator (SG)
steam flow/feedwater flow mismatch coincident with low SG level reactor  
protection signal.  Shortly prior to the trip, the bistables for one     
channel of the "A" SG flow mismatch circuit had been placed in trip, in  
response to a failed steam flow channel.  The "A" SG experienced a level 
transient while transferring feedwater flow control from the bypass      
feedwater regulating valve (FRV) to the main FRV.  The normal SG level   
band during reactor startup is 28 percent to 38 percent narrow range     
level.  Level reached the coincident 25 percent low SG level trip        
setpoint during the transfer, and the reactor tripped as designed.       
                                                                         
The plant responded to the trip as designed.  The steam flow channel has 
been repaired and minor adjustments to the feedwater control system are  
in progress.  The licensee has not announced a restart schedule, but     
restart is expected within the next few days.                            

Contact:  Neil Perry                 (610)337-5225
          Dave Kern                  (412)643-2000
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